Numbers Puzzles

7. The numbers 1 - 9 can be placed in the nine circles below in such a way that both sets of crossed circles can add up to 26. From the numbers already given, where would the number 1 go? It can be placed in either one of two circles.
8. In a group of 28 junior high school students, 7 take French, 10 take Spanish, and 4 take both languages. The students taking both French and Spanish are not counted with the 7 taking French or the 10 taking Spanish. How many students are not taking either French or Spanish?.
Seven students are not taking a language. Add 7 + 10 +4 to get 21.
Then subtract 21 from the total students: 28 - 21 = 7.